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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2024 Reepca Russelstein <reepca@russelstein.xyz>
;;; Copyright © 2024 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (test-store-deadlock)
#:use-module (guix tests)
#:use-module (guix store)
#:use-module (guix derivations)
#:use-module (guix gexp)
#:use-module (guix monads)
#:use-module (gnu packages bootstrap)
#:use-module (ice-9 threads)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-64))
(define input-drvs
(map (lambda (n)
(computed-file (string-append "drv" (number->string n))
#~(begin
#$(random-text)
(sleep 4)
(mkdir #$output))
#:guile %bootstrap-guile))
(iota 15)))
(define top-drv
(computed-file "top-drv"
#~(begin
#$(random-text)
(sleep 3)
(pk 'deps: #$@input-drvs)
(mkdir #$output))
#:guile %bootstrap-guile))
(%graft? #f)
(test-begin "store-deadlock")
(test-equal "no deadlock" ;https://issues.guix.gnu.org/31785
'(thread1 thread2 thread3)
;; This test checks for the absence of a deadlock when guix-daemon spawns
;; several child processes (one for each client) that compete to build the
;; same set of derivations. See <https://issues.guix.gnu.org/31785>.
(let* ((drvs (cons top-drv input-drvs))
(builder (lambda (name lst)
(call-with-new-thread
(lambda ()
(with-store store
(set-build-options store
#:verbosity 3
#:max-build-jobs 1)
(run-with-store store
(mlet %store-monad ((lst (mapm %store-monad
lower-object lst)))
(mbegin %store-monad
(built-derivations lst)
(return name)))))))))
(thread1 (builder 'thread1 drvs))
(thread2 (begin
(sleep 1)
(builder 'thread2 drvs)))
(thread3 (begin
(sleep 1)
(builder 'thread3 drvs))))
;; This test should complete in less than a minute; if not, there's a
;; deadlock.
(let ((deadline (+ (current-time) 120)))
(list (join-thread thread1 deadline 'timeout)
(join-thread thread2 deadline 'timeout)
(join-thread thread3 deadline 'timeout)))))
(test-end)
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